Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method comprising: receiving a channel state information reference signal (CSI-RS) measurement timing configuration (CMTC) by a user equipment (UE) from a network, wherein the CMTC comprises a CMTC timing offset, a CMTC duration, and a CMTC periodicity to indicate CMTC timing windows; receiving a synchronization signal block (SSB) measurement timing configuration (SMTC) to indicate SMTC timing windows from the network, wherein the CMTC timing offset is reference to a frame boundary or a starting timing of a default SMTC of a serving cell when the CMTC is configured for an intra-frequency CSI-RS measurement in the serving cell frequency carrier; determining time locations of CSI-RS radio resources for CSI-RS measurement based on the CMTC timing windows, the SMTC timing windows, and also based on a measurement gap configuration when an inter-frequency CSI-RS or SSB measurement is configured; and performing CSI-RS measurements by the UE using the derived time locations of the CSI-RS resources.
This invention relates to wireless communication systems, specifically methods for configuring and performing channel state information reference signal (CSI-RS) measurements in user equipment (UE). The problem addressed is the need for efficient and accurate timing synchronization between CSI-RS measurements and synchronization signal block (SSB) measurements, particularly in scenarios involving intra-frequency or inter-frequency measurements. The method involves receiving a CSI-RS measurement timing configuration (CMTC) from a network, which includes a timing offset, duration, and periodicity to define CMTC timing windows. The UE also receives an SSB measurement timing configuration (SMTC) to define SMTC timing windows. For intra-frequency CSI-RS measurements, the CMTC timing offset is referenced to either a frame boundary or the starting timing of a default SMTC in the serving cell frequency carrier. The UE determines the time locations of CSI-RS radio resources for measurement by combining the CMTC timing windows, SMTC timing windows, and a measurement gap configuration when inter-frequency CSI-RS or SSB measurements are configured. The UE then performs CSI-RS measurements using the derived time locations. This approach ensures proper synchronization and efficient resource utilization for channel state information acquisition in wireless networks.
2. The method of claim 1 , wherein the UE performs intra-frequency CSI-RS measurement outside the measurement gap and within the CMTC measurement windows.
A method for wireless communication involves a user equipment (UE) performing intra-frequency channel state information reference signal (CSI-RS) measurements outside of measurement gaps and within connected mode time-controlled (CMTC) measurement windows. The UE operates in a wireless network where periodic measurement gaps are used for inter-frequency or inter-RAT measurements, but these gaps may not align with the timing of CSI-RS transmissions. To avoid measurement gaps, the UE performs intra-frequency CSI-RS measurements during CMTC measurement windows, which are predefined time intervals where the UE is allowed to perform measurements without disrupting ongoing communication. The method ensures that the UE can obtain accurate channel state information for intra-frequency cells without relying on measurement gaps, improving measurement efficiency and reducing latency. The UE may adjust its measurement timing based on the CSI-RS configuration and the CMTC window schedule to ensure measurements are taken at the correct intervals. This approach optimizes resource usage and maintains communication reliability while enabling precise channel state estimation.
3. The method of claim 1 , wherein the CMTC windows are fully overlapped with the measurement gap, wherein UE performs intra-frequency measurement and inter-frequency measurement with respect to a scaling factor.
This invention relates to wireless communication systems, specifically improving measurement techniques for user equipment (UE) in scenarios involving measurement gaps. The problem addressed is the inefficiency in performing intra-frequency and inter-frequency measurements during measurement gaps, which can lead to suboptimal performance in handover decisions and network resource allocation. The invention describes a method where measurement windows (referred to as CMTC windows) are fully overlapped with the measurement gap. This means the entire duration of the measurement window coincides with the measurement gap, ensuring that the UE can perform measurements without interrupting ongoing communication. The UE conducts both intra-frequency measurements (within the same frequency band) and inter-frequency measurements (across different frequency bands) using a scaling factor. This scaling factor adjusts the measurement parameters to optimize accuracy and efficiency, particularly in scenarios where the UE needs to switch between different frequency bands or cells. By fully overlapping the measurement windows with the measurement gaps, the invention minimizes disruptions to data transmission while ensuring reliable measurement data for network decisions. The use of a scaling factor further enhances the adaptability of the measurement process, allowing the UE to balance between measurement accuracy and resource utilization. This approach is particularly useful in heterogeneous networks where seamless handover and efficient resource management are critical.
4. The method of claim 1 , wherein the CMTC windows and the SMTC windows are fully overlapped outside the measurement gap, wherein the UE performs CSI-RS and SSB measurements with respect to a sharing factor.
A user equipment (UE) receives a Channel State Information Reference Signal (CSI-RS) Measurement Timing Configuration (CMTC) from the network. This CMTC specifies a timing offset, duration, and periodicity, defining specific CMTC timing windows for CSI-RS measurements. The CMTC timing offset is referenced either to a frame boundary or to the starting time of a default Synchronization Signal Block (SSB) Measurement Timing Configuration (SMTC) from the serving cell, particularly for intra-frequency CSI-RS measurements. The UE also receives an SMTC from the network, which indicates SMTC timing windows for SSB measurements. The UE determines the precise time locations for CSI-RS radio resources using these CMTC and SMTC timing windows. This determination also considers any measurement gap configuration, especially when inter-frequency CSI-RS or SSB measurements are configured. In a particular scenario, the CMTC timing windows and the SMTC timing windows are configured to fully overlap *outside* of any active measurement gaps. When this complete overlap occurs, the UE performs both CSI-RS measurements and SSB measurements, applying a "sharing factor" to manage or combine these measurement operations efficiently. ERROR (embedding): Error: Failed to save embedding: Could not find the 'embedding' column of 'patent_claims' in the schema cache
5. A method comprising: receiving a channel state information reference signal (CSI-RS) measurement timing configuration (CMTC) by a user equipment (UE) from a network, wherein the CMTC comprises a CMTC timing offset, a CMTC duration, and a CMTC periodicity to indicate CMTC timing windows; receiving a synchronization signal block (SSB) measurement timing configuration (SMTC) to indicate SMTC timing windows from the network; determining time locations of CSI-RS radio resources for CSI-RS measurement based on the CMTC timing windows, the SMTC timing windows, and also based on a measurement gap configuration when an inter-frequency CSI-RS or SSB measurement is configured; and performing CSI-RS measurements by the UE using the derived time locations of the CSI-RS resources, wherein the CMTC windows are not fully overlapped with the gap and not fully overlapped with the SMTC windows outside the gap, where the UE performs CSI-RS measurement outside the SMTC windows.
6. A User Equipment (UE), comprising: a receiver that receives a channel state information reference signal (CSI-RS) measurement timing configuration (CMTC) and receives a synchronization signal block (SSB) measurement timing configuration (SMTC) from a network to indicate CMTC and SMTC timing windows, wherein the CMTC comprises a CMTC timing offset, a CMTC duration, and a CMTC periodicity, wherein the CMTC timing offset is reference to a frame boundary or a starting timing of a default SMTC of a serving cell when the CMTC is configured for an intra-frequency CSI-RS measurement in the serving cell frequency carrier; a CSI-RS measurement config module that determines time locations of CSI-RS radio resources for CSI-RS measurement based on the CMTC timing windows, the SMTC timing windows, and also based on a measurement gap configuration when an inter-frequency CSI-RS or SSB measurement is configured; and a measurement module that performs CSI-RS measurements using the derived time locations of the CSI-RS resources.
7. The UE of claim 6 , wherein the UE performs intra-frequency CSI-RS measurement outside the measurement gap and within the CMTC measurement windows.
This invention relates to wireless communication systems, specifically to techniques for performing intra-frequency Channel State Information Reference Signal (CSI-RS) measurements in User Equipment (UE) operating in Connected Mode Time Control (CMTC) scenarios. The problem addressed is the need for efficient CSI-RS measurement procedures that avoid reliance on measurement gaps, which can disrupt communication and reduce efficiency. The UE is configured to perform intra-frequency CSI-RS measurements outside of predefined measurement gaps. These measurements are conducted within CMTC measurement windows, which are time intervals allocated for periodic measurements without interrupting normal communication. The UE autonomously determines when to perform these measurements based on the CMTC configuration, ensuring that the measurements do not conflict with ongoing data transmission or reception. This approach improves measurement accuracy and reduces the need for dedicated measurement gaps, enhancing overall system efficiency. The UE may also be configured to receive configuration parameters from a network node, such as a base station, which define the timing and duration of the CMTC measurement windows. The UE uses these parameters to schedule the CSI-RS measurements accordingly. Additionally, the UE may adjust its measurement procedures based on network conditions, such as signal strength or interference levels, to optimize performance. This dynamic adaptation ensures reliable CSI-RS measurements while maintaining communication quality. The invention thus provides a flexible and efficient solution for intra-frequency measurements in wireless networks.
8. The UE of claim 6 , wherein the CMTC windows are fully overlapped with the measurement gap, wherein UE performs intra-frequency measurement and inter-frequency measurement with respect to a scaling factor.
This invention relates to wireless communication systems, specifically to user equipment (UE) configured for measurement gap handling in cellular networks. The problem addressed is optimizing measurement procedures during communication, particularly when the UE needs to perform both intra-frequency and inter-frequency measurements while maintaining efficient use of communication resources. The UE is designed to handle measurement gaps, which are periodic intervals where the UE suspends normal communication to perform signal measurements on other frequencies or cells. The invention improves upon prior art by fully overlapping the connected-mode time control (CMTC) windows with the measurement gap. This overlap ensures that the UE can perform both intra-frequency (same frequency as the serving cell) and inter-frequency (different frequency) measurements within the same measurement gap, reducing the need for additional gaps and improving communication efficiency. The UE applies a scaling factor to adjust the measurement parameters, allowing it to balance the time spent on intra-frequency and inter-frequency measurements. This scaling factor ensures that the measurements are performed accurately while minimizing disruptions to ongoing communication. The overlapping of CMTC windows with the measurement gap and the use of a scaling factor enhance the UE's ability to monitor neighboring cells and optimize handover decisions without degrading the quality of the current connection. This approach is particularly useful in dense network environments where frequent measurements are required to maintain optimal connectivity.
9. The UE of claim 6 , wherein the CMTC windows and the SMTC windows are fully overlapped outside the measurement gap, wherein the UE performs CSI-RS and SSB measurements with respect to a sharing factor.
This invention relates to wireless communication systems, specifically to user equipment (UE) configured for measurement tasks in scenarios involving shared spectrum access. The problem addressed is optimizing measurement efficiency when a UE must perform both Connected Mode Mobility (CMT) and Standby Mode Tracking (SMT) measurements, particularly when these tasks overlap outside designated measurement gaps. The UE is designed to handle overlapping measurement windows for CMT and SMT by fully aligning these windows outside the measurement gap period. This alignment ensures that the UE can perform both Channel State Information Reference Signal (CSI-RS) and Synchronization Signal Block (SSB) measurements without conflicts. The measurements are conducted based on a sharing factor, which likely determines how resources are allocated or prioritized between the two measurement types. The sharing factor may adjust measurement parameters such as timing, frequency, or resource allocation to balance the demands of CMT and SMT tasks. This approach improves measurement efficiency and reduces the risk of missed measurements or increased power consumption, which are critical in shared spectrum environments where spectrum access must be carefully managed.
10. A User Equipment (UE), comprising: a receiver that receives a channel state information reference signal (CSI-RS) measurement timing configuration (CMTC) and receives a synchronization signal block (SSB) measurement timing configuration (SMTC) from a network to indicate CMTC and SMTC timing windows, wherein the CMTC comprises a CMTC timing offset, a CMTC duration, and a CMTC periodicity, wherein the CMTC timing offset is reference to a frame boundary or a starting timing of a default SMTC of a serving cell when the CMTC is configured for an intra-frequency CSI-RS measurement in the serving cell frequency carrier; a CSI-RS measurement config module that determines time locations of CSI-RS radio resources for CSI-RS measurement based on the CMTC timing windows, the SMTC timing windows, and also based on a measurement gap configuration when an inter-frequency CSI-RS or SSB measurement is configured; and a measurement module that performs CSI-RS measurements using the derived time locations of the CSI-RS resources, wherein the CMTC windows are not fully overlapped with the gap and not fully overlapped with the SMTC windows outside the gap, where the UE performs CSI-RS measurement outside the SMTC windows.
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April 13, 2021
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